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Zhang L, Tan J, Liu Y, Luo M. Curcumin relieves arecoline-induced oral submucous fibrosis via inhibiting the LTBP2/NF-κB axis. Oral Dis 2024; 30:2314-2324. [PMID: 37382472 DOI: 10.1111/odi.14656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/15/2023] [Accepted: 06/12/2023] [Indexed: 06/30/2023]
Abstract
BACKGROUND Submucosal fibrosis (OSF) of the oral cavity is a chronic scarring disease. Arecoline (Are) is the driving factor for the occurrence and deterioration of OSF. Curcumin plays a vital anti-inflammatory role in Are-induced OSF development. However, its potential pharmacological mechanism needs to be elucidated. METHODS The relative molecular level was measured via qRT-PCR or Western blot. MTT assay, transwell assay and flow cytometry detected cell proliferation, migration, and apoptosis. The correlation between hypoxia-inducible factor-1α (HIF-1α) and LTBP2 promoter was confirmed through dual-luciferase reporter assay. ELISA was performed to detect inflammatory cytokines levels. RESULTS Curcumin alleviated Are-induced oral mucosal fibroblast cells fibrosis by reducing oral mucosa fibroblasts viability, promoting cell apoptosis, suppressing cell migration, and down-regulating the levels of fibrosis markers and inflammatory factors. Curcumin relieved Are-induced OSF via inhibiting HIF-1α. Mechanically, HIF-1α bound to the promoter of LTBP2 to transcriptionally activated LTBP2. LTBP2 knockdown relieved Are-induced OSF, and curcumin down-regulated LTBP2 via inhibiting HIF-1α to relieve Are-induced OSF. Moreover, curcumin decreased NF-κB signal associated proteins via inhibiting LTBP2 to relieve Are-induced OSF. CONCLUSION Curcumin reduced the transcription level of LTBP2 by inhibiting HIF-1α, thereby inactivating NF-κB pathway to alleviate Are-induced OSF.
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Affiliation(s)
- Lin Zhang
- Department of Stomatology, The First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, Hunan Province, China
| | - Jin Tan
- Department of Stomatology, The First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, Hunan Province, China
| | - Yiping Liu
- Department of Stomatology, The First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, Hunan Province, China
| | - Mang Luo
- Hunan Changsha Maternal and Child Health Hospital, Changsha, Hunan Province, China
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Li Z, Zhu J, Ouyang H. Research progress of traditional Chinese medicine in improving hepatic fibrosis based on inhibiting pathological angiogenesis. Front Pharmacol 2023; 14:1303012. [PMID: 38155904 PMCID: PMC10754536 DOI: 10.3389/fphar.2023.1303012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 11/28/2023] [Indexed: 12/30/2023] Open
Abstract
Hepatic fibrosis is the formation of scar tissue in the liver. This scar tissue replaces healthy liver tissue and can lead to liver dysfunction and failure if left untreated. It is usually caused by chronic liver disease, such as hepatitis B or C, alcohol abuse, or non-alcoholic fatty liver disease. Pathological angiogenesis plays a crucial role in the development of hepatic fibrosis by promoting the growth of new blood vessels in the liver. These new vessels increase blood flow to the damaged areas of the liver, which triggers the activation of hepatic stellate cells (HSCs). HSCs are responsible for producing excess collagen and other extracellular matrix proteins that contribute to the development of fibrosis. Pathological angiogenesis plays a crucial role in the development of hepatic fibrosis by promoting the growth of new blood vessels in the liver. These new vessels increase blood flow to the damaged areas of the liver, which triggers the activation of HSCs. HSCs are responsible for producing excess collagen and other extracellular matrix proteins that contribute to the development of fibrosis. Traditional Chinese medicine (TCM) has been found to target pathological angiogenesis, thereby providing a potential treatment option for hepatic fibrosis. Several studies have demonstrated that TCM exhibits anti-angiogenic effects by inhibiting the production of pro-angiogenic factors, such as vascular endothelial growth factor and angiopoietin-2, and by reducing the proliferation of endothelial cells. Reviewing and highlighting the unique TCM recognition of treating hepatic fibrosis by targeting pathological angiogenesis may shed light on future hepatic fibrosis research.
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Yang J, Li S, Liu S, Zhang Y, Shen D, Wang P, Dang X. Metformin ameliorates liver fibrosis induced by congestive hepatopathy via the mTOR/HIF-1α signaling pathway. Ann Hepatol 2023; 28:101135. [PMID: 37451514 DOI: 10.1016/j.aohep.2023.101135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/22/2023] [Accepted: 06/05/2023] [Indexed: 07/18/2023]
Abstract
INTRODUCTION AND OBJECTIVES Congestive hepatopathy (CH) is a hepatic vascular disease that results in chronic liver congestion, which can lead to liver fibrosis. New uses of metformin have been discovered over the years. However, the function of metformin in congestive liver fibrosis is not yet fully understood. This study aimed to investigate the effect of metformin on liver fibrosis in a mouse model of CH. MATERIALS AND METHODS Partial ligation of the inferior vena cava (pIVCL) was used to establish a mouse model of liver congestion. Metformin (0.1%) was added to the daily drinking water of the animals, and the effect of metformin on liver tissue was studied after 6 weeks. Hepatic stellate cells (HSCs) were also stimulated with CoCl2 to investigate the inhibitory impact of metformin on the mammalian target of rapamycin (mTOR)/hypoxia-inducible factor-1α (HIF-1α) pathway. RESULTS Metformin attenuated liver congestion; decreased the expression of collagen, fibronectin, α-smooth muscle actin (α-SMA), and HIF-1α; and ameliorated liver fibrosis in pIVCL mice. The proliferation and migration of HSCs were inhibited by metformin in vitro, which prevented α-SMA expression and restrained HSC activation. The expression levels of phosphorylated-mTOR, HIF-1α, and vascular endothelial growth factor were also decreased. CONCLUSIONS Metformin inhibits CH-induced liver fibrosis. Functionally, this beneficial effect may be the result of inhibition of HSC activation and of the mTOR/HIF-1α signaling pathway.
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Affiliation(s)
- Jing Yang
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Suxin Li
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Shengyan Liu
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Yuehui Zhang
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Dongqi Shen
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Peiju Wang
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Xiaowei Dang
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China.
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Kim K, Lee SB. Regulation of CMGC kinases by hypoxia. BMB Rep 2023; 56:584-593. [PMID: 37915135 PMCID: PMC10689084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 09/25/2023] [Accepted: 10/12/2023] [Indexed: 11/03/2023] Open
Abstract
Hypoxia, a widespread occurrence observed in various malignant tumors, results from rapid tumor growth that outpaces the oxygen supply. Tumor hypoxia precipitates several effects on tumor biology; these include activating angiogenesis, intensifying invasiveness, enhancing the survival of tumor cells, suppressing anti-tumor immunity, and fostering resistance to therapy. Aligned with the findings that correlate CMGC kinases with the regulation of Hypoxia-Inducible Factor (HIF), a pivotal modulator, reports also indicate that hypoxia governs the activity of CMGC kinases, including DYRK1 kinases. Prolyl hydroxylation of DYRK1 kinases by PHD1 constitutes a novel mechanism of kinase maturation and activation. This modification "primes" DYRK1 kinases for subsequent tyrosine autophosphorylation, a vital step in their activation cascade. This mechanism adds a layer of intricacy to comprehending the regulation of CMGC kinases, and underscores the complex interplay between distinct post-translational modifications in harmonizing precise kinase activity. Overall, hypoxia assumes a substantial role in cancer progression, influencing diverse aspects of tumor biology that include angiogenesis, invasiveness, cell survival, and resistance to treatment. CMGC kinases are deeply entwined in its regulation. To fathom the molecular mechanisms underpinning hypoxia's impact on cancer cells, comprehending how hypoxia and prolyl hydroxylation govern the activity of CMGC kinases, including DYRK1 kinases, becomes imperative. This insight may pave the way for pioneering therapeutic approaches that target the hypoxic tumor microenvironment and its associated challenges. [BMB Reports 2023; 56(11): 584-593].
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Affiliation(s)
- KyeongJin Kim
- Department of Biomedical Sciences, Program in Biomedical Science & Engineering and Research Center for Controlling Intercellular Communication (RCIC), Inha University College of Medicine, Incheon 22212, Korea
| | - Sang Bae Lee
- Division of Life Sciences, Jeonbuk National University, Jeonju 54896, Korea
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Yin KL, Li M, Song PP, Duan YX, Ye WT, Tang W, Kokudo N, Gao Q, Liao R. Unraveling the Emerging Niche Role of Hepatic Stellate Cell-derived Exosomes in Liver Diseases. J Clin Transl Hepatol 2023; 11:441-451. [PMID: 36643031 PMCID: PMC9817040 DOI: 10.14218/jcth.2022.00326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/16/2022] [Accepted: 09/23/2022] [Indexed: 01/18/2023] Open
Abstract
Hepatic stellate cells (HSCs) play an essential role in various liver diseases, and exosomes are critical mediators of intercellular communication in local and distant microenvironments. Cellular crosstalk between HSCs and surrounding multiple tissue-resident cells promotes or inhibits the activation of HSCs. Substantial evidence has revealed that HSC-derived exosomes are involved in the occurrence and development of liver diseases through the regulation of retinoid metabolism, lipid metabolism, glucose metabolism, protein metabolism, and mitochondrial metabolism. HSC-derived exosomes are underpinned by vehicle molecules, such as mRNAs and microRNAs, that function in, and significantly affect, the processes of various liver diseases, such as acute liver injury, alcoholic liver disease, nonalcoholic fatty liver disease, viral hepatitis, fibrosis, and cancer. As such, numerous exosomes derived from HSCs or HSC-associated exosomes have attracted attention because of their biological roles and translational applications as potential targets for therapeutic targets. Herein, we review the pathophysiological and metabolic processes associated with HSC-derived exosomes, their roles in various liver diseases and their potential clinical application.
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Affiliation(s)
- Kun-Li Yin
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ming Li
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Pei-Pei Song
- National Center for Global Health and Medicine, Tokyo, Japan
| | - Yu-Xin Duan
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wen-Tao Ye
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wei Tang
- National Center for Global Health and Medicine, Tokyo, Japan
| | - Norihiro Kokudo
- National Center for Global Health and Medicine, Tokyo, Japan
| | - Qiang Gao
- Department of Liver Surgery and Transplantation, and Key Laboratory of Carcinogenesis and Cancer Invasion (Ministry of Education), Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, China
- Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
- State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
- Correspondence to: Qiang Gao, Department of Liver Surgery and Transplantation, and Key Laboratory of Carcinogenesis and Cancer Invasion (Ministry of Education), Liver Cancer Institute, Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, State Key Laboratory of Genetic Engineering, Fudan University, 180 Fenglin Road, Shanghai 200032, China. ORCID: https://orcid.org/0000-0002-6695-9906. ; Rui Liao, Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, 1 Youyi Road, Chongqing 400016, China. ORCID: https://orcid.org/0000-0002-0057-2792. E-mail:
| | - Rui Liao
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Correspondence to: Qiang Gao, Department of Liver Surgery and Transplantation, and Key Laboratory of Carcinogenesis and Cancer Invasion (Ministry of Education), Liver Cancer Institute, Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, State Key Laboratory of Genetic Engineering, Fudan University, 180 Fenglin Road, Shanghai 200032, China. ORCID: https://orcid.org/0000-0002-6695-9906. ; Rui Liao, Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, 1 Youyi Road, Chongqing 400016, China. ORCID: https://orcid.org/0000-0002-0057-2792. E-mail:
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Mahmoudi A, Atkin SL, Jamialahmadi T, Banach M, Sahebkar A. Effect of Curcumin on Attenuation of Liver Cirrhosis via Genes/Proteins and Pathways: A System Pharmacology Study. Nutrients 2022; 14:nu14204344. [PMID: 36297027 PMCID: PMC9609422 DOI: 10.3390/nu14204344] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 01/30/2023] Open
Abstract
Background: Liver cirrhosis is a life-threatening seqsuel of many chronic liver disorders of varying etiologies. In this study, we investigated protein targets of curcumin in liver cirrhosis based on a bioinformatics approach. Methods: Gene/protein associations with curcumin and liver cirrhosis were probed in drug−gene and gene−diseases databases including STITCH/DGIdb/DisGeNET/OMIM/DISEASES/CTD/Pharos and SwissTargetPrediction. Critical clustering groups (MCODE), hub candidates and critical hub genes in liver cirrhosis were identified, and connections between curcumin and liver cirrhosis-related genes were analyzed via Venn diagram. Interaction of hub genes with curcumin by molecular docking using PyRx-virtual screening tools was performed. Results: MCODE analysis indicated three MCODEs; the cluster (MCODE 1) comprised 79 nodes and 881 edges (score: 22.59). Curcumin database interactions recognized 318 protein targets. Liver cirrhosis genes and curcumin protein targets analysis demonstrated 96 shared proteins, suggesting that curcumin may influence 20 candidate and 13 hub genes, covering 81% of liver cirrhosis critical genes and proteins. Thirteen shared proteins affected oxidative stress regulation, RNA, telomerase activity, cell proliferation, and cell death. Molecular docking analysis showed the affinity of curcumin binding hub genes (Binding affinity: ΔG < −4.9 kcal/mol). Conclusions: Curcumin impacted on several critical liver cirrhosis genes mainly involved in extracellular matrix communication, focal adhesion, and the response to oxidative stress.
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Affiliation(s)
- Ali Mahmoudi
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Medical Biotechnology and Nanotechnology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Stephen L. Atkin
- School of Postgraduate Studies and Research, RCSI Medical University of Bahrain, Busaiteen, Bahrain
| | - Tannaz Jamialahmadi
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maciej Banach
- Department of Preventive Cardiology and Lipidology, Medical University of Lodz (MUL), 93-338 Lodz, Poland
- Cardiovascular Research Center, University of Zielona Gora, 65-417 Zielona Gora, Poland
- Correspondence: (M.B.); or (A.S.); Tel.: +98-513-180-1239 (A.S.); Fax: +98-513-800-2287 (A.S.)
| | - Amirhossein Sahebkar
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Correspondence: (M.B.); or (A.S.); Tel.: +98-513-180-1239 (A.S.); Fax: +98-513-800-2287 (A.S.)
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Evaluation of the Mechanism of Jiedu Huazhuo Quyu Formula in Treating Wilson's Disease-Associated Liver Fibrosis by Network Pharmacology Analysis and Molecular Dynamics Simulation. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:9363131. [PMID: 35707473 PMCID: PMC9192323 DOI: 10.1155/2022/9363131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 03/28/2022] [Accepted: 05/14/2022] [Indexed: 12/23/2022]
Abstract
The Jiedu Huazhuo Quyu formula (JHQ) shows significant beneficial effects against liver fibrosis caused by Wilson's disease (WD). Hence, this study aimed to clarify the mechanisms of the JHQ treatment in WD-associated liver fibrosis. First, we collected 103 active compounds and 527 related targets of JHQ and 1187 targets related to WD-associated liver fibrosis from multiple databases. Next, 113 overlapping genes (OGEs) were obtained. Then, we built a protein-protein interaction (PPI) network with Cytoscape 3.7.2 software and performed the Gene Ontology (GO) term and Kyoto Encyclopedia of Gene and Genome (KEGG) pathway enrichment analyses with GENE DENOVO online sites. Furthermore, module analysis was performed, and the core target genes in the JHQ treatment of WD-associated liver fibrosis were obtained. Pathway and functional enrichment analyses, molecular docking studies, molecular dynamic (MD) simulation, and Western blot (WB) were then performed. The results indicated that 8 key active compounds including quercetin, luteolin, and obacunone in JHQ might affect the 6 core proteins including CXCL8, MAPK1, and AKT1 and 107 related signaling pathways including EGFR tyrosine kinase inhibitor resistance, Kaposi sarcoma-associated herpesvirus infection, and human cytomegalovirus infection signaling pathways to exhibit curative effects on WD-associated liver fibrosis. Mechanistically, JHQ might inhibit liver inflammatory processes and vascular hyperplasia, regulate the cell cycle, and suppress both the activation and proliferation of hepatic stellate cells (HSCs). This study provides novel insights for researchers to systematically explore the mechanism of JHQ in treating WD-associated liver fibrosis.
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Atef MM, Shafik NM, Hafez YM, Watany MM, Selim A, Shafik HM, Safwat El-Deeb O. The evolving role of long noncoding RNA HIF1A-AS2 in diabetic retinopathy: a cross-link axis between hypoxia, oxidative stress and angiogenesis via MAPK/VEGF-dependent pathway. Redox Rep 2022; 27:70-78. [PMID: 35285425 PMCID: PMC8928809 DOI: 10.1080/13510002.2022.2050086] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background Diabetic retinopathy (DR) signifies a frequent serious diabetic complication influencing retinal structure and function. Dysregulation of lncRNAs drives a wide array of human diseases especially diabetes; thus, we aimed to study lncRNA HIF1A-AS2 role and its interplay with hypoxia, oxidative stress (OS), and angiogenesis in DR. Materials and methods 60 DM patients in addition to 15 healthy subjects. were enrolled. LncRNA HIF1A-AS2 mRNA relative gene expression was assessed. Hypoxia inducible factor 1-alpha (HIF-1α), vascular endothelial growth factor (VEGF), mitogen activated protein kinase (MAPK), and endoglin levels were assessed. Detection of DNA damage using comet assay, and Redox status parameters were also detected. Results LncRNA HIF1A-AS2 expression was significantly increased in diabetic patients with the highest levels in proliferative DR patients. Moreover, HIFα, VEGF, MAPK, and Endogolin levels were significantly higher in the diabetic patients compared to control group with the highest levels in in proliferative DR patients. Significant DNA damage in comet assay was observed to be the highest in this group. Conclusion We observed for the first time the imminent role of long noncoding RNA HIF1A-AS2 in DR throughout its stages and its interplay with hypoxia, OS, and angiogenesis via MAPK/VEGF-dependent pathway.
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Affiliation(s)
- Marwa Mohamed Atef
- Medical Biochemistry Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Noha M. Shafik
- Medical Biochemistry Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Yasser Mostafa Hafez
- Internal Medicine Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Mona Mohamed Watany
- Clinical pathology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Amal Selim
- Internal Medicine Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Heba M. Shafik
- Ophthalmology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Omnia Safwat El-Deeb
- Medical Biochemistry Department, Faculty of Medicine, Tanta University, Tanta, Egypt
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Jiang TT, Ji CF, Cheng XP, Gu SF, Wang R, Li Y, Zuo J, Han J. α-Mangostin Alleviated HIF-1α-Mediated Angiogenesis in Rats With Adjuvant-Induced Arthritis by Suppressing Aerobic Glycolysis. Front Pharmacol 2021; 12:785586. [PMID: 34987400 PMCID: PMC8721667 DOI: 10.3389/fphar.2021.785586] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/22/2021] [Indexed: 11/13/2022] Open
Abstract
A previously validated anti-rheumatic compound α-mangostin (MAN) shows significant metabolism regulatory effects. The current study aimed to clarify whether this property contributed to its inhibition on synovial angiogenesis. Male wistar rats with adjuvant-induced arthritis (AIA) were orally treated by MAN for 32 days. Afterwards, biochemical parameters and cytokines in plasma were determined by corresponding kits, and glycometabolism-related metabolites were further accurately quantified by LC-MS method. Anti-angiogenic effects of MAN were preliminarily assessed by joints based-immunohistochemical examination and matrigel plug assay. Obtained results were then validated by experiments in vitro. AIA-caused increase in circulating transforming growth factor beta, interleukin 6, hypoxia inducible factor-1 alpha (HIF-1α) and vascular endothelial growth factor (VEGF) in blood and local HIF-1α/VEGF expression in joints was abrogated by MAN treatment, and pannus formation within matrigel plugs implanted in AIA rats was inhibited too. Scratch and transwell assays revealed the inhibitory effects of MAN on human umbilical vein endothelial cells (HUVECs) migration. Furthermore, MAN inhibited tubule formation capability of HUVECs and growth potential of rat arterial ring-derived endothelial cells in vitro. Meanwhile, MAN eased oxidative stress, and altered glucose metabolism in vivo. Glycolysis-related metabolites including glucose 6-phosphate, fructose 6-phosphate, 3-phosphoglyceric acid and phosphoenolpyruvic acid in AIA rats were decreased by MAN, while the impaired pyruvate-synthesizing capability of lactate dehydrogenase (LDH) was recovered. Consistently, MAN restored lipopolysaccharide-elicited changes on levels of glucose and LDH in HUVECs culture system, and exerted similar effects with LDH inhibitor stiripentol on glycometabolism and VEGF production as well as tubule formation capability of HUVECs. These evidences show that MAN treatment inhibited aerobic glycolysis in AIA rats, which consequently eased inflammation-related hypoxia, and hampered pathological neovascularization.
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Affiliation(s)
- Tian-Tian Jiang
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu, China
- Anhui Provincial Engineering Laboratory for Screening and Re-Evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Wuhu, China
| | - Chao-Fan Ji
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu, China
- Xin’an Medicine Research Center, Wannan Medical College, Wuhu, China
| | - Xiu-Ping Cheng
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu, China
- Xin’an Medicine Research Center, Wannan Medical College, Wuhu, China
| | - Shao-Fei Gu
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu, China
- Xin’an Medicine Research Center, Wannan Medical College, Wuhu, China
| | - Rui Wang
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu, China
- Research Center of Integration of Traditional Chinese and Western Medicine, Wannan Medical College, Wuhu, China
| | - Yan Li
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu, China
- Xin’an Medicine Research Center, Wannan Medical College, Wuhu, China
| | - Jian Zuo
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu, China
- Xin’an Medicine Research Center, Wannan Medical College, Wuhu, China
- Key Laboratory of Non-Coding RNA Transformation Research of Anhui Higher Education Institution, Wannan Medical College, Wuhu, China
| | - Jun Han
- Anhui Provincial Engineering Laboratory for Screening and Re-Evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Wuhu, China
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Zhang L, Gao J, Zhou D, Wang X, Li J, Wang J, Chen H, Xie X, Chen T. Profiles of messenger RNAs and MicroRNAs in hypoxia-induced hepatic stellate cells. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1451. [PMID: 34734003 PMCID: PMC8506783 DOI: 10.21037/atm-21-4215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/18/2021] [Indexed: 11/18/2022]
Abstract
Background MicroRNA (miRNA) plays an important role in hepatic stellate cell (HSCs) activation and liver fibrosis. The purpose of this study is to explore the effect of hypoxia on the differential expression of mRNAs and miRNAs in rat HSCs. Methods HSC-T6 cells were treated with cobalt chloride (CoCl2), and the activity of HSC-T6 cells was measured by the CCK-8 assay. The mRNA expression levels of hypoxia inducible factor-1α (HIF-1α), collagen type I, transforming growth factor-β1 (TGF-β1), and Smad7 were measured by RT-qPCR. The protein expression levels of HIF-1α, Bax, Bcl-2, and caspase-3 were assayed by western blot. We used basal medium and 400 µmol/L CoCl2 medium to treat HSC-T6 cells for 48 h. Cells were harvested after 48 h to extract RNA. Transcriptome sequencing was performed to investigate differentially expressed miRNAs and mRNAs (fold change >2; P<0.05). Bioinformatics analysis was performed to predict the functions of differentially expressed miRNAs and mRNAs. Further, we used RT-qPCR to detect the expression of mRNAs and miRNAs to confirm the accuracy of sequencing. Results With the increase of CoCl2 concentration, the activity of HSC-T6 cells decreased (P<0.05). The mRNA expression levels of HIF-1α, collagen I, TGF-β1, and Smad7, and the protein expressions levels of HIF-1α, Bax, caspase-3, and the Bcl-2/Bax ratio were increased compared with the control group (P<0.05), while the expression of Bcl-2 decreased. A total of 54 miRNAs (20 upregulated and 34 downregulated) and 1,423 mRNAs (685 upregulated and 738 downregulated) were differentially expressed in the 400 µmol/L CoCl2 medium group compared to the control basal medium group. Further bioinformatics analysis demonstrated that the differentially expressed mRNAs and miRNAs were mainly enriched in the synthesis of extracellular matrix. In addition, we used RT-qPCR to detect the expression of mRNAs and miRNAs to confirm the accuracy of sequencing. Conclusions Our results presented the profiles of mRNAs and miRNAs in hypoxia-induced HSC-T6 cells in rats, the signaling pathways, and co-expression networks. These findings may suggest novel insights for the early diagnosis and treatment of HSC activation and liver fibrosis.
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Affiliation(s)
- Liting Zhang
- State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China.,Department of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, China
| | - Jing Gao
- Respiratory Medicine Unit, Department of Medicine, Karolinska Institute, Stockholm, Sweden
| | - Dan Zhou
- Department of Liver Diseases, The First Hospital of Lanzhou University, Lanzhou, China
| | - Xiaojun Wang
- Department of Respiratory Medicine, Gansu Provincial Hospital, Lanzhou, China.,The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Junfeng Li
- Department of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, China
| | - Juan Wang
- Department of Gastroenterology, Xi'an International Medical Center, Xi'an, China
| | - Hong Chen
- Department of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, China.,Department of Gastroenterology, Xi'an International Medical Center, Xi'an, China
| | - Xiaodong Xie
- Institute of Medical Genetics, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Tuo Chen
- State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
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11
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Hypoxia, Hypoxia-Inducible Factors and Liver Fibrosis. Cells 2021; 10:cells10071764. [PMID: 34359934 PMCID: PMC8305108 DOI: 10.3390/cells10071764] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/07/2021] [Accepted: 07/08/2021] [Indexed: 12/18/2022] Open
Abstract
Liver fibrosis is a potentially reversible pathophysiological event, leading to excess deposition of extracellular matrix (ECM) components and taking place as the net result of liver fibrogenesis, a dynamic and highly integrated process occurring during chronic liver injury of any etiology. Liver fibrogenesis and fibrosis, together with chronic inflammatory response, are primarily involved in the progression of chronic liver diseases (CLD). As is well known, a major role in fibrogenesis and fibrosis is played by activated myofibroblasts (MFs), as well as by macrophages and other hepatic cell populations involved in CLD progression. In the present review, we will focus the attention on the emerging pathogenic role of hypoxia, hypoxia-inducible factors (HIFs) and related mediators in the fibrogenic progression of CLD.
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12
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Zhang L, Tan J, Liu YP, Liu X, Luo M. Curcumin relieves the arecoline-induced fibrosis of oral mucosal fibroblasts via inhibiting HIF-1α/TGF-β/CTGF signaling pathway: an in vitro study. Toxicol Res (Camb) 2021; 10:631-638. [PMID: 34141177 DOI: 10.1093/toxres/tfab046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 04/19/2021] [Accepted: 04/27/2021] [Indexed: 11/14/2022] Open
Abstract
Oral submacosal fibrosis (OSF) has been recognized as one of the oral potentially malignant disorders. Areca nut chewing is implicated in this pathological fibrosis. The current treatments for OSF have failed to achieve the desired curative effect. Here, we propose that curcumin has excellent therapeutic effect on OSF and explore its specific mechanism. Transwell assay was performed to detected cell migration. Flow cytometry was used to measured apoptosis. And MTT assay was performed to test cell viability. Gene and protein levels were detected by quantitative real-time polymerase chain reaction (qPCR) and western blotting. Our results displayed that curcumin treatment reduced fibrosis-related molecules (collagen type I alpha 1, collagen type III alpha 1, tissue inhibitor of metalloprotease 2) in arecoline-treated oral mucosal fibroblasts and elevated matrix metalloproteinase 2 expression. Additionally, curcumin could suppress cell proliferation and migration, and enhance the apoptosis of arecoline-treated normal oral mucosal fibroblasts. Most importantly, the hypoxia-inducible factor-1α (HIF-1α), transforming growth factor-β (TGF-β) and connective tissue growth factor (CTGF) expressions in arecoline-treated normal oral mucosal fibroblasts were reduced after exposure to curcumin, whereas the activation of HIF-1α/TGF-β/CTGF axis reversed curcumin's effect on improving fibrosis of arecoline-treated normal oral mucosal fibroblasts. Therefore, curcumin alleviated oral submucosal fibrosis via inhibiting HIF-1α/TGF-β/CTGF axis. In summary, curcumin effectively inhibited the migration and proliferation and promoted apoptosis in arecoline-induced normal oral mucosal fibroblasts by inactivating HIF-1α/TGF-β/CTGF pathway. And curcumin might be a potential therapeutic drug for OSF treatment.
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Affiliation(s)
| | - Jin Tan
- Department of Stomatology, The First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, Hunan Province 410007, P.R. China
| | - Yi-Ping Liu
- Department of Stomatology, The First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, Hunan Province 410007, P.R. China
| | - Xun Liu
- Department of Stomatology, The First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, Hunan Province 410007, P.R. China
| | - Mang Luo
- Department of Stomatology, The First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, Hunan Province 410007, P.R. China
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13
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Cai J, Hu M, Chen Z, Ling Z. The roles and mechanisms of hypoxia in liver fibrosis. J Transl Med 2021; 19:186. [PMID: 33933107 PMCID: PMC8088569 DOI: 10.1186/s12967-021-02854-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 04/21/2021] [Indexed: 02/06/2023] Open
Abstract
Liver fibrosis occurs in response to any etiology of chronic liver injury. Lack of appropriate clinical intervention will lead to liver cirrhosis or hepatocellular carcinoma (HCC), seriously affecting the quality of life of patients, but the current clinical treatments of liver fibrosis have not been developed yet. Recent studies have shown that hypoxia is a key factor promoting the progression of liver fibrosis. Hypoxia can cause liver fibrosis. Liver fibrosis can, in turn, profoundly further deepen the degree of hypoxia. Therefore, exploring the role of hypoxia in liver fibrosis will help to further understand the process of liver fibrosis, and provide the theoretical basis for its diagnosis and treatment, which is of great significance to avoid further deterioration of liver diseases and protect the life and health of patients. This review highlights the recent advances in cellular and molecular mechanisms of hypoxia in developments of liver fibrosis.
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Affiliation(s)
- Jingyao Cai
- Department of Laboratory Medicine, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, People's Republic of China
| | - Min Hu
- Department of Laboratory Medicine, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, People's Republic of China.
| | - Zhiyang Chen
- Department of Laboratory Medicine, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, People's Republic of China
| | - Zeng Ling
- Department of Laboratory Medicine, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, People's Republic of China
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14
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Kiani AA, Elyasi H, Ghoreyshi S, Nouri N, Safarzadeh A, Nafari A. Study on hypoxia-inducible factor and its roles in immune system. Immunol Med 2021; 44:223-236. [PMID: 33896415 DOI: 10.1080/25785826.2021.1910187] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The Hypoxia-Inducible Factor-1 (HIF-1) is a dimeric protein complex that plays a significant role in responding to low oxygen or hypoxia concentrations. Chronic inflammation is one of the immune system responses and can increase HIF expression in involved tissues through lowering the oxygen and hypoxia. The HIF factor has many critical roles in immunity, and thus, we reviewed the crucial roles of this factor in the immune system. The results showed various key roles on the immune system, including physical defenses, innate immune (neutrophils apoptosis, macrophages) and inflammatory responses (pyrexia and local heat, iron access, etc.), upregulation in response to microbial infections, cytokines expression (IL-1, IL-2, IL-6, IL-8, IL-12, IL-18, TNF, etc.), drug targeting, etc. The HIF roles in the acquired immune system include: enhance the adaptation of cells (dendritic cells) to new conditions and triggering the signal pathways. The findings of the present review demonstrated that the HIF has important roles in the immune system, including physical defense, innate immune as well as acquired immunity; therefore, it may be considered as a potent drug targeting several diseases such as cancers, infectious diseases, etc.
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Affiliation(s)
- Ali Asghar Kiani
- Department of Laboratory Sciences, Lorestan University of Medical Sciences, Khoramabad, Iran
| | - Hossein Elyasi
- Student Research Committee, Lorestan University of Medical Sciences, Khoramabad, Iran
| | - Shadiyeh Ghoreyshi
- Student Research Committee, Lorestan University of Medical Sciences, Khoramabad, Iran
| | - Negar Nouri
- Student Research Committee, Lorestan University of Medical Sciences, Khoramabad, Iran
| | - Ali Safarzadeh
- Student Research Committee, Lorestan University of Medical Sciences, Khoramabad, Iran
| | - Amirhossein Nafari
- Department of Clinical Biochemistry, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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15
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Abstract
Hepatic stellate cells (HSCs) are resident non-parenchymal liver pericytes whose plasticity enables them to regulate a remarkable range of physiologic and pathologic responses. To support their functions in health and disease, HSCs engage pathways regulating carbohydrate, mitochondrial, lipid, and retinoid homeostasis. In chronic liver injury, HSCs drive hepatic fibrosis and are implicated in inflammation and cancer. To do so, the cells activate, or transdifferentiate, from a quiescent state into proliferative, motile myofibroblasts that secrete extracellular matrix, which demands rapid adaptation to meet a heightened energy need. Adaptations include reprogramming of central carbon metabolism, enhanced mitochondrial number and activity, endoplasmic reticulum stress, and liberation of free fatty acids through autophagy-dependent hydrolysis of retinyl esters that are stored in cytoplasmic droplets. As an archetype for pericytes in other tissues, recognition of the HSC's metabolic drivers and vulnerabilities offer the potential to target these pathways therapeutically to enhance parenchymal growth and modulate repair.
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Affiliation(s)
- Parth Trivedi
- Division of Liver Diseases, The Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Shuang Wang
- Division of Liver Diseases, The Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Scott L Friedman
- Division of Liver Diseases, The Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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16
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Erber LN, Luo A, Gong Y, Beeson M, Tu M, Tran P, Chen Y. Iron Deficiency Reprograms Phosphorylation Signaling and Reduces O-GlcNAc Pathways in Neuronal Cells. Nutrients 2021; 13:E179. [PMID: 33430126 PMCID: PMC7826960 DOI: 10.3390/nu13010179] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/29/2020] [Accepted: 12/31/2020] [Indexed: 01/14/2023] Open
Abstract
Micronutrient sensing is critical for cellular growth and differentiation. Deficiencies in essential nutrients such as iron strongly affect neuronal cell development and may lead to defects in neuronal function that cannot be remedied by subsequent iron supplementation. To understand the adaptive intracellular responses to iron deficiency in neuronal cells, we developed and utilized a Stable Isotopic Labeling of Amino acids in Cell culture (SILAC)-based quantitative phosphoproteomics workflow. Our integrated approach was designed to comprehensively elucidate the changes in phosphorylation signaling under both acute and chronic iron-deficient cell models. In addition, we analyzed the differential cellular responses between iron deficiency and hypoxia (oxygen-deprived) in neuronal cells. Our analysis identified nearly 16,000 phosphorylation sites in HT-22 cells, a hippocampal-derived neuronal cell line, more than ten percent of which showed at least 2-fold changes in response to either hypoxia or acute/chronic iron deficiency. Bioinformatic analysis revealed that iron deficiency altered key metabolic and epigenetic pathways including the phosphorylation of proteins involved in iron sequestration, glutamate metabolism, and histone methylation. In particular, iron deficiency increased glutamine-fructose-6-phosphate transaminase (GFPT1) phosphorylation, which is a key enzyme in the glucosamine biosynthesis pathway and a target of 5' AMP-activated protein kinase (AMPK), leading to reduced GFPT1 enzymatic activity and consequently lower global O-GlcNAc modification in neuronal cells. Taken together, our analysis of the phosphoproteome dynamics in response to iron and oxygen deprivation demonstrated an adaptive cellular response by mounting post-translational modifications that are critical for intracellular signaling and epigenetic programming in neuronal cells.
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Affiliation(s)
- Luke N. Erber
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (L.N.E.); (A.L.); (Y.G.); (M.T.)
| | - Ang Luo
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (L.N.E.); (A.L.); (Y.G.); (M.T.)
| | - Yao Gong
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (L.N.E.); (A.L.); (Y.G.); (M.T.)
| | - Montana Beeson
- Department of Pediatrics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (M.B.); (P.T.)
| | - Maolin Tu
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (L.N.E.); (A.L.); (Y.G.); (M.T.)
| | - Phu Tran
- Department of Pediatrics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (M.B.); (P.T.)
| | - Yue Chen
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (L.N.E.); (A.L.); (Y.G.); (M.T.)
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17
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Liu J, Xie Y, Cui Z, Xia T, Wan L, Zhou H, Zhang P, Zhang Y, Guan F, Liu W, Shi C. Bnip3 interacts with vimentin, an intermediate filament protein, and regulates autophagy of hepatic stellate cells. Aging (Albany NY) 2020; 13:957-972. [PMID: 33290258 PMCID: PMC7834981 DOI: 10.18632/aging.202211] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 09/09/2020] [Indexed: 04/21/2023]
Abstract
Bnip3, which is regulated by Hif-1 in cells under oxygen deprivation, is a death related protein associated with autophagy and apoptosis. Hif-1 was reported to regulate autophagy to activate hepatic stellate cells (HSCs), while the specific molecular mechanism is vague. The possible mechanism of Hif-1 regulating autophagy of HSCs via Bnip3 was explored in this study. Bnip3 was detected in fibrotic liver tissues from humans and mice. Hif-1 was inhibited by chemical inhibitor and Bnip3 was detected in activated HSCs. The co-localization of Bnip3 and LC3B was captured by confocal microscopy and autophagic flow was assessed in Bnip3 siRNA transfected cells. Bnip3 interacted proteins were screened with mass spectrometry. The interaction of Bnip3 and vimentin was detected with co-immunoprecipitation and confocal microscopy. The results showed that Bnip3 was increased in fibrotic liver tissues and activated HSCs. Hif-1 inhibition suppressed Bnip3 expression in activated HSCs. Bnip3 was partially co-localized with autophagosomes and Bnip3 inhibition suppessed autophagy in activated HSCs. Bnip3 interacted with vimentin and Bnip3 expression was inhibited as vimentin was inhibited in activated HSCs. Conclusively, this study indicated that Bnip3 promoted autophagy and activation of HSCs, via interacting with vimentin, an intermediate filament protein with highly abundant expression in HSCs.
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Affiliation(s)
- Jie Liu
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Department of Hospital Infection Management, Wuhan Children’s Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Yuyu Xie
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Zhangbo Cui
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Tian Xia
- Department of Surgery, Wuhan Third Hospital, Wuhan, PR China
| | - Lu Wan
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Haifeng Zhou
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Peng Zhang
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Yijie Zhang
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Fei Guan
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Wenqi Liu
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Chunwei Shi
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
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18
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Barrera LN, Evans A, Lane B, Brumskill S, Oldfield FE, Campbell F, Andrews T, Lu Z, Perez-Mancera PA, Liloglou T, Ashworth M, Jalali M, Dawson R, Nunes Q, Phillips PA, Timms JF, Halloran C, Greenhalf W, Neoptolemos JP, Costello E. Fibroblasts from Distinct Pancreatic Pathologies Exhibit Disease-Specific Properties. Cancer Res 2020; 80:2861-2873. [PMID: 32393661 DOI: 10.1158/0008-5472.can-19-3534] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 04/14/2020] [Accepted: 05/05/2020] [Indexed: 12/20/2022]
Abstract
Although fibrotic stroma forms an integral component of pancreatic diseases, whether fibroblasts programmed by different types of pancreatic diseases are phenotypically distinct remains unknown. Here, we show that fibroblasts isolated from patients with pancreatic ductal adenocarcinoma (PDAC), chronic pancreatitis (CP), periampullary tumors, and adjacent normal (NA) tissue (N = 34) have distinct mRNA and miRNA profiles. Compared with NA fibroblasts, PDAC-associated fibroblasts were generally less sensitive to an antifibrotic stimulus (NPPB) and more responsive to positive regulators of activation such as TGFβ1 and WNT. Of the disease-associated fibroblasts examined, PDAC- and CP-derived fibroblasts shared greatest similarity, yet PDAC-associated fibroblasts expressed higher levels of tenascin C (TNC), a finding attributable to miR-137, a novel regulator of TNC. TNC protein and transcript levels were higher in PDAC tissue versus CP tissue and were associated with greater levels of stromal activation, and conditioned media from TNC-depleted PDAC-associated fibroblasts modestly increased both PDAC cell proliferation and PDAC cell migration, indicating that stromal TNC may have inhibitory effects on PDAC cells. Finally, circulating TNC levels were higher in patients with PDAC compared with CP. Our characterization of pancreatic fibroblast programming as disease-specific has consequences for therapeutic targeting and for the manner in which fibroblasts are used in research. SIGNIFICANCE: Primary fibroblasts derived from various types of pancreatic diseases possess and retain distinct molecular and functional characteristics in culture, providing a series of cellular models for treatment development and disease-specific research.
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Affiliation(s)
- Lawrence N Barrera
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Anthony Evans
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Brian Lane
- School of Medical Sciences, Division of Cancer Sciences, University of Manchester, Manchester, United Kingdom
| | - Sarah Brumskill
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Frances E Oldfield
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Fiona Campbell
- Department of Histopathology, Royal Liverpool University Hospital, Liverpool, United Kingdom
| | - Timothy Andrews
- Department of Histopathology, Royal Liverpool University Hospital, Liverpool, United Kingdom
| | - Zipeng Lu
- Pancreas Center, The First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Pedro A Perez-Mancera
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Triantafillos Liloglou
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Milton Ashworth
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Mehdi Jalali
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Rebecca Dawson
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Quentin Nunes
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Phoebe A Phillips
- Pancreatic Cancer Translational Research Group, Lowy Cancer Research Centre, School of Medical Sciences, University of New South Wales (UNSW Sydney), Sydney, Australia
| | - John F Timms
- Institute for Women's Health, University College London, London, United Kingdom
| | - Christopher Halloran
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - William Greenhalf
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - John P Neoptolemos
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
| | - Eithne Costello
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom.
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19
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Dong W, Kong M, Zhu Y, Shao Y, Wu D, Lu J, Guo J, Xu Y. Activation of TWIST Transcription by Chromatin Remodeling Protein BRG1 Contributes to Liver Fibrosis in Mice. Front Cell Dev Biol 2020; 8:340. [PMID: 32478075 PMCID: PMC7237740 DOI: 10.3389/fcell.2020.00340] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 04/17/2020] [Indexed: 12/12/2022] Open
Abstract
Liver fibrosis is a complex pathophysiological process to which many different cell types contribute. Endothelial cells play versatile roles in the regulation of liver fibrosis. The underlying epigenetic mechanism is not fully appreciated. In the present study, we investigated the role of BRG1, a chromatin remodeling protein, in the modulation of endothelial cells in response to pro-fibrogenic stimuli in vitro and liver fibrosis in mice. We report that depletion of BRG1 by siRNA abrogated TGF-β or hypoxia induced down-regulation of endothelial marker genes and up-regulation of mesenchymal marker genes in cultured endothelial cells. Importantly, endothelial-specific BRG1 deletion attenuated CCl4 induced liver fibrosis in mice. BRG1 knockdown in vitro or BRG1 knockout in vivo was accompanied by the down-regulation of TWIST, a key regulator of endothelial phenotype. Mechanistically, BRG1 interacted with and was recruited to the TWIST promoter by HIF-1α to activate TWIST transcription. BRG1 silencing rendered a more repressive chromatin structure surrounding the TWIST promoter likely contributing to TWIST down-regulation. Inhibition of HIF-1α activity dampened liver fibrosis in mice. Similarly, pharmaceutical inhibition of TWIST alleviated liver fibrosis in mice. In conclusion, our data suggest that epigenetic activation of TWIST by BRG1 contributes to the modulation of endothelial phenotype and liver fibrosis. Therefore, targeting the HIF1α-BRG1-TWIST axis may yield novel therapeutic solutions to treat liver fibrosis.
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Affiliation(s)
- Wenhui Dong
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Ming Kong
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Yuwen Zhu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Yang Shao
- Hainan Provincial Key Laboratory for Tropical Cardiovascular Diseases Research and Key Laboratory of Emergency and Trauma of Ministry of Education, Institute of Cardiovascular Research of the First Affiliated Hospital, Hainan Medical University, Haikou, China
| | - Dongmei Wu
- Key Laboratory of Biotechnology on Medical Plants of Jiangsu Province and School of Life Sciences, Jiangsu Normal University, Xuzhou, China
| | - Jun Lu
- Key Laboratory of Biotechnology on Medical Plants of Jiangsu Province and School of Life Sciences, Jiangsu Normal University, Xuzhou, China
| | - Junli Guo
- Hainan Provincial Key Laboratory for Tropical Cardiovascular Diseases Research and Key Laboratory of Emergency and Trauma of Ministry of Education, Institute of Cardiovascular Research of the First Affiliated Hospital, Hainan Medical University, Haikou, China
| | - Yong Xu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China.,Institute of Biomedical Research, Liaocheng University, Liaocheng, China
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20
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Wan L, Xia T, Du Y, Liu J, Xie Y, Zhang Y, Guan F, Wu J, Wang X, Shi C. Exosomes from activated hepatic stellate cells contain GLUT1 and PKM2: a role for exosomes in metabolic switch of liver nonparenchymal cells. FASEB J 2019; 33:8530-8542. [PMID: 30970216 DOI: 10.1096/fj.201802675r] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The mechanism of exosomes derived from activated hepatic stellate cells (HSCs) involved in liver fibrosis is poorly understood. We previously reported that hypoxia-inducible factor 1 (Hif-1) regulated HSC activation, and, therefore, we investigated in current work whether Hif-1 regulates exosome secretion and the metabolic switch of HSCs, thus affecting the metabolism of liver nonparenchymal cells. In this study, the characteristics of exosomes from HSCs were assessed via electron microscopy, Western blot analysis, and acetylcholinesterase activity. Confocal microscopy was used to measure the uptake of exosomes by quiescent HSCs, Kupffer cells (KCs), and liver sinusoidal endothelial cells (LSECs). Hif-1α was inhibited via 2-ME or specific small interfering RNAs to investigate its role in exosomes derived from HSCs. It was determined that glucose transporter 1 and pyruvate kinase M2 were increasingly expressed in fibrotic liver samples, cell lysates, and exosomes derived from activated HSCs. Exosomes released from HSCs were associated with activation and glucose uptake of HSCs. Delivery of exosomes from activated HSCs induced glycolysis of quiescent HSCs, KCs, and LSECs. Disruption of Hif-1 expression suppressed the glycolysis effect delivered by exosomes. Conclusively, our results demonstrated that exosomes secreted by activated HSCs affect the metabolic switch of liver nonparenchymal cells via delivery of glycolysis-related proteins. These findings represent a novel mechanism that contributes to liver fibrosis and has significant implications for new diagnosis and treatment of liver diseases.-Wan, L., Xia, T., Du, Y., Liu, J., Xie, Y., Zhang, Y., Guan, F., Wu, J., Wang, X., Shi, C. Exosomes from activated hepatic stellate cells contain GLUT1 and PKM2: a role for exosomes in metabolic switch of liver nonparenchymal cells.
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Affiliation(s)
- Lu Wan
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tian Xia
- Department of Surgery, Wuhan Third Hospital, Wuhan, China
| | - Yanqin Du
- Department of Infectious Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jie Liu
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuyu Xie
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yijie Zhang
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fei Guan
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Wu
- Department of Infectious Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaochuan Wang
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunwei Shi
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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21
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Lee KC, Hsu WF, Hsieh YC, Chan CC, Yang YY, Huang YH, Hou MC, Lin HC. Dabigatran Reduces Liver Fibrosis in Thioacetamide-Injured Rats. Dig Dis Sci 2019; 64:102-112. [PMID: 30288660 DOI: 10.1007/s10620-018-5311-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Accepted: 09/28/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND Liver fibrosis can progress to cirrhosis, hepatocellular carcinoma, or liver failure. Unfortunately, the antifibrotic agents are limited. Thrombin activates hepatic stellate cells (HSCs). Therefore, we investigated the effects of a direct thrombin inhibitor, dabigatran, on liver fibrosis. METHODS Adult male Sprague-Dawley rats were injected intraperitoneally with thioacetamide (TAA, 200 mg/kg twice per week) for 8 or 12 weeks to induce liver fibrosis. The injured rats were assigned an oral gavage of dabigatran etexilate (30 mg/kg/day) or vehicle in the last 4 weeks of TAA administration. Rats receiving an injection of normal saline and subsequent oral gavage of dabigatran etexilate or vehicle served as controls. RESULTS In the 8-week TAA-injured rats, dabigatran ameliorated fibrosis, fibrin deposition, and phosphorylated ERK1/2 in liver, without altering the transcript expression of thrombin receptor protease-activated receptor-1. In vitro, dabigatran inhibited thrombin-induced HSC activation. Furthermore, dabigatran reduced intrahepatic angiogenesis and portal hypertension in TAA-injured rats. Similarly, in the 12-week TAA-injured rats, a 4-week treatment with dabigatran reduced liver fibrosis and portal hypertension. CONCLUSIONS By inhibiting thrombin action, dabigatran reduced liver fibrosis and intrahepatic angiogenesis. Dabigatran may be a promising therapeutic agent for treatment of liver fibrosis.
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Affiliation(s)
- Kuei-Chuan Lee
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, #201, Section 2, Shih-Pai Road, Taipei 112, Taiwan.,Department of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Wei-Fan Hsu
- Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Hepato-Gastroenterology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Yun-Cheng Hsieh
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, #201, Section 2, Shih-Pai Road, Taipei 112, Taiwan.,Department of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Che-Chang Chan
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, #201, Section 2, Shih-Pai Road, Taipei 112, Taiwan.,Department of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Ying-Ying Yang
- Department of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yi-Hsiang Huang
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, #201, Section 2, Shih-Pai Road, Taipei 112, Taiwan.,Department of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Ming-Chih Hou
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, #201, Section 2, Shih-Pai Road, Taipei 112, Taiwan.,Department of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Han-Chieh Lin
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, #201, Section 2, Shih-Pai Road, Taipei 112, Taiwan. .,Department of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
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22
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Hu Y, Hu D, Yu H, Xu W, Fu R. Hypoxia‑inducible factor 1α and ROCK1 regulate proliferation and collagen synthesis in hepatic stellate cells under hypoxia. Mol Med Rep 2018; 18:3997-4003. [PMID: 30132575 DOI: 10.3892/mmr.2018.9397] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 02/27/2018] [Indexed: 11/06/2022] Open
Abstract
Hypoxia serves a critical role in the pathogenesis of liver fibrosis. Hypoxia‑inducible factor 1α (HIF1‑α) is induced when cells are exposed to low O2 concentrations. Recently, it has been suggested that Rho‑associated coiled‑coil‑forming kinase 1 (ROCK1) may be an important HIF1‑α regulator. In the present study, it was analyzed whether crosstalk between HIF1‑α and ROCK1 regulates cell proliferation and collagen synthesis in hepatic stellate cells (HSCs) under hypoxic conditions. For this purpose, a rat hepatic HSC line (HSC‑T6) was cultured under hypoxic or normoxic conditions, and HIF1‑α and ROCK1 expression was measured at different time points. Additionally, HSC‑T6 cells were transfected with HIF1‑α small interfering RNA (siHIF1‑α), and measured protein expression and mRNA transcript levels of α‑smooth muscle actin, collagen 1A1 and ROCK1. Collagen 3A1 secretion was also measured by ELISA. Cell proliferation was assessed by the MTT assay under these hypoxic conditions. The results indicated that a specific ROCK inhibitor, Y‑27632, increased HIF1‑α and ROCK1 expression over time in HSC‑T6 cells in response to hypoxia. In addition, knockdown of HIF1‑α inhibited HSC‑T6 proliferation, suppressed collagen 1A1 expression, decreased collagen 3A1 secretion and attenuated ROCK1 expression. Notably, ROCK1 inhibition caused HSC‑T6 quiescence, suppressed collagen secretion and downregulated HIF1‑α expression. Collectively, these findings indicated that the interplay between HIF1‑α and ROCK1 may be a critical factor that regulates cell proliferation and collagen synthesis in rat HSCs under hypoxia.
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Affiliation(s)
- Yibing Hu
- Department of Infectious Diseases, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325200, P.R. China
| | - Danping Hu
- Department of Infectious Diseases, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325200, P.R. China
| | - Huanhuan Yu
- Department of Infectious Diseases, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325200, P.R. China
| | - Wangwang Xu
- Department of Infectious Diseases, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325200, P.R. China
| | - Rongquan Fu
- Department of Infectious Diseases, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325200, P.R. China
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PPAR γ Antagonizes Hypoxia-Induced Activation of Hepatic Stellate Cell through Cross Mediating PI3K/AKT and cGMP/PKG Signaling. PPAR Res 2018; 2018:6970407. [PMID: 29686697 PMCID: PMC5852857 DOI: 10.1155/2018/6970407] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 12/20/2017] [Indexed: 12/12/2022] Open
Abstract
Background and Aims Accumulating evidence reveals that PPARγ plays a unique role in the regulation of hepatic fibrosis and hepatic stellate cells (HSCs) activation. This study was aimed at investigating the role of PPARγ in hypoxia-induced hepatic fibrogenesis and its possible mechanism. Methods Rats used for CCl4-induced hepatic fibrosis model were exposed to hypoxia for 8 hours each day. Rats exposed to hypoxia were treated with or without the PPARγ agonist rosiglitazone. Liver sections were stained with HE and Sirius red staining 8 weeks later. HSCs were exposed to hypoxic environment in the presence or absence of rosiglitazone, and expression of PPARγ and two fibrosis markers, α-SMA and desmin, were measured using western blot and immunofluorescence staining. Next, levels of PPARγ, α-SMA, and desmin as well as PKG and cGMP activity were detected using PI3K/AKT and a cGMP activator or inhibitor. Results Hypoxia promoted the induction and progress of hepatic fibrosis and HSCs activation. Meanwhile, rosiglitazone significantly antagonized the effects induced by hypoxia. Signaling by sGC/cGMP/PKG promoted the inhibitory effect of PPARγ on hypoxia-induced activation of HSCs. Moreover, PI3K/AKT signaling or PDE5 blocked the above response of PPARγ. Conclusion sGC/cGMP/PKG and PI3K/AKT signals act on PPARγ synergistically to attenuate hypoxia-induced HSC activation.
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Hong F, Wan L, Liu J, Huang K, Xiao Z, Zhang Y, Shi C. Histone methylation regulates Hif-1 signaling cascade in activation of hepatic stellate cells. FEBS Open Bio 2018; 8:406-415. [PMID: 29511617 PMCID: PMC5832973 DOI: 10.1002/2211-5463.12379] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Revised: 11/28/2017] [Accepted: 12/31/2017] [Indexed: 12/16/2022] Open
Abstract
Liver fibrosis is characterized by deposition of excessive extracellular matrix (ECM). The major source of ECM is activated hepatic stellate cells (HSCs). Previously, we reported that hypoxia-inducible factor-1 (Hif-1) regulates activation of HSCs through autophagy. In current work, human HSC cell line LX-2 was used as cell model. It was determined that trimethylation of H3 histone on lysine 4 (H3K4me3) occurred in the Hif-1 transcriptional complex. Inhibition of modifications of histone methylation suppressed Hif-1 nuclear transport, autophagosome formation, and activation of LX-2 cells. These data suggest that histone methylation modification plays an important role in the Hif-1 signaling cascade regulating HSC activation.
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Affiliation(s)
- Fei Hong
- Department of Pathogen Biology School of Basic Medicine Huazhong University of Science and Technology Wuhan China
| | - Lu Wan
- Department of Pathogen Biology School of Basic Medicine Huazhong University of Science and Technology Wuhan China
| | - Jie Liu
- Department of Pathogen Biology School of Basic Medicine Huazhong University of Science and Technology Wuhan China
| | - Ke Huang
- Department of Pathogen Biology School of Basic Medicine Huazhong University of Science and Technology Wuhan China
| | - Zhenmeng Xiao
- Department of Pathogen Biology School of Basic Medicine Huazhong University of Science and Technology Wuhan China
| | - Yingjing Zhang
- Department of Pathogen Biology School of Basic Medicine Huazhong University of Science and Technology Wuhan China
| | - Chunwei Shi
- Department of Pathogen Biology School of Basic Medicine Huazhong University of Science and Technology Wuhan China
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25
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Zhao Y, Dang Z, Xu S, Chong S. Heat shock protein 47 effects on hepatic stellate cell-associated receptors in hepatic fibrosis of Schistosoma japonicum-infected mice. Biol Chem 2017; 398:1357-1366. [DOI: 10.1515/hsz-2017-0177] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Accepted: 08/04/2017] [Indexed: 12/16/2022]
Abstract
AbstractThe study aimed to explore the regulation of heat shock protein 47 (HSP47) on expressions of receptors associated with hepatic stellate cell (HSC) in liver fibrosis mouse models induced bySchistosoma japonicum(S. japonicum). Mouse fibroblasts (NIH/3T3) were transfected with HSP47 shRNA plasmid by lipofectamine transfection, and experimental fibrosis in HSCs was studied inS. japonicummouse models treated with HSP47 shRNAin vivo. HSP47 expression was assessed using Western blot and real-time PCR. Flow cytometry was adopted to determine the expression of cell membrane receptors. HSP47-shRNA could markedly down-regulate the expression of collagen (Col1a1 and Col3a1). The expressions of HSP47, endothelin receptor A (ETAR) and endothelin receptor B (ETBR) significantly increased in the liver tissue of infected mice. However, the expressions of ETAR and HSP47 and ETBR remarkably decreased after the administration of HSP47 shRNAin vitroandin vivo. ETAR and ETBR levels were found to be positively correlated with HSP47 expression. HSP47 might exert influence on liver fibrosis via the regulation of ETAR and ETBR.
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26
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Bae M, Park YK, Lee JY. Food components with antifibrotic activity and implications in prevention of liver disease. J Nutr Biochem 2017; 55:1-11. [PMID: 29268106 DOI: 10.1016/j.jnutbio.2017.11.003] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 09/18/2017] [Accepted: 11/11/2017] [Indexed: 12/26/2022]
Abstract
Increasing prevalence of nonalcoholic fatty liver disease (NAFLD) in parallel with the obesity epidemic has been a major public health concern. NAFLD is the most common chronic liver disease in the United States, ranging from fatty liver to steatohepatitis, fibrosis and cirrhosis in the liver. In response to chronic liver injury, fibrogenesis in the liver occurs as a protective response; however, prolonged and dysregulated fibrogenesis can lead to liver fibrosis, which can further progress to cirrhosis and eventually hepatocellular carcinoma. Interplay of hepatocytes, macrophages and hepatic stellate cells (HSCs) in the hepatic inflammatory and oxidative milieu is critical for the development of NAFLD. In particular, HSCs play a major role in the production of extracellular matrix proteins. Studies have demonstrated that bioactive food components and natural products, including astaxanthin, curcumin, blueberry, silymarin, coffee, vitamin C, vitamin E, vitamin D, resveratrol, quercetin and epigallocatechin-3-gallate, have antifibrotic effects in the liver. This review summarizes current knowledge of the mechanistic insight into the antifibrotic actions of the aforementioned bioactive food components.
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Affiliation(s)
- Minkyung Bae
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Young-Ki Park
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Ji-Young Lee
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA; Department of Food and Nutrition, Kyung Hee University, Seoul, South Korea.
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27
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Shen P, Li Q, Ma J, Tian M, Hong F, Zhai X, Li J, Huang H, Shi C. IRAK-M alters the polarity of macrophages to facilitate the survival of Mycobacterium tuberculosis. BMC Microbiol 2017; 17:185. [PMID: 28835201 PMCID: PMC5569470 DOI: 10.1186/s12866-017-1095-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 08/15/2017] [Indexed: 12/19/2022] Open
Abstract
Background Intracellular bacterium, Mycobacterium tuberculosis (M. tb), infects specifically macrophages as host cells. IRAK-M, a member of IRAK family, is a negative regulator in TLR signaling and specifically expresses in monocytes and macrophages. The role of IRAK-M in intracellular growth of M. tb and macrophage polarization was explored, for deeply understanding the pathogenesis of M. tb, the significance of IRAK-M to innate immunity and pathogen-host interaction. Methods IRAK-M expression was detected in M. tb infected macrophages and in human lung tissue of pulmonary tuberculosis with immunofluorescence staining, Western blot and immunohistochemistry. IRAK-M knock-down and over-expressing cell strains were constructed and intracellular survival of M. tb was investigated by acid-fast staining and colony forming units. Molecular markers of M1-type (pSTAT1 and iNOS) and M2-type (pSTAT6 and Arg-1) macrophages were detected using Western blot in IRAK-M knockdown U937 cells infected with M. tb H37Rv. U937 cells were stimulated with immunostimulant CpG7909 into M1 status and then infected with M. tb H37Rv. Expression of IRAK-M, IRAK-4 and iNOS was detected with immunofluorescence staining and Western blot, to evaluate the effect of IRAK-M to CpG directed M1-type polarization of macrophages during M. tb infection. Molecules related with macrophage’s bactericidal ability such as Hif-1 and phosphorylated ERK1/2 were detected with immunohistochemistry and Western blot. Results IRAK-M increased in M. tb infected macrophage cells and also in human lung tissue of pulmonary tuberculosis. IRAK-M over-expression resulted in higher bacterial load, while IRAK-M interference resulted in lower bacterial load in M. tb infected cells. During M. tb infection, IRAK-M knockdown induced M1-type, while inhibited M2-type polarization of macrophage. M1-type polarization of U937 cells induced by CpG7909 was inhibited by M. tb infection, which was reversed by IRAK-M knockdown in U937 cells. IRAK-M affected Hif-1 and MAPK signaling cascade during M. tb infection. Conclusions Conclusively, IRAK-M might alter the polarity of macrophages, to facilitate intracellular survival of M. tb and affect Th1-type immunity of the host, which is helpful to understanding the pathogenesis of M. tb.
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Affiliation(s)
- Pei Shen
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.,Department of Clinical Microbiology, School of Public Health, Taishan Medical University, Tai'an, 271016, People's Republic of China
| | - Quan Li
- Wuhan Institute for Tuberculosis Control, Wuhan, 430030, People's Republic of China
| | - Jilei Ma
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Maopeng Tian
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Fei Hong
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Xinjie Zhai
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Jianrong Li
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Hanju Huang
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Chunwei Shi
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
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28
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Zhang F, Hao M, Jin H, Yao Z, Lian N, Wu L, Shao J, Chen A, Zheng S. Canonical hedgehog signalling regulates hepatic stellate cell-mediated angiogenesis in liver fibrosis. Br J Pharmacol 2017; 174:409-423. [PMID: 28052321 DOI: 10.1111/bph.13701] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Revised: 12/18/2016] [Accepted: 12/23/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND PURPOSE Hepatic stellate cells (HSCs) are liver-specific pericytes regulating angiogenesis during liver fibrosis. We aimed to elucidate the mechanisms by which hedgehog signalling regulated HSC angiogenic properties and to validate the therapeutic implications. EXPERIMENTAL APPROACH Rats and mice were treated with carbon tetrachloride for in vivo evaluation of hepatic angiogenesis and fibrotic injury. Diversified molecular approaches including real-time PCR, Western blot, luciferase reporter assay, chromatin immunoprecipitation, electrophoretic mobility shift assay and co-immunoprecipitation were used to investigate the underlying mechanisms in vitro. KEY RESULTS Angiogenesis was concomitant with up-regulation of Smoothened (SMO) and hypoxia inducible factor-1α (HIF-1α) in rat fibrotic liver. The SMO inhibitor cyclopamine and Gli1 inhibitor GANT-58 reduced expression of VEGF and angiopoietin 1 in HSCs and suppressed HSC tubulogenesis capacity. HIF-1α inhibitor PX-478 suppressed HSC angiogenic behaviour, and inhibition of hedgehog decreased HIF-1α expression. Furthermore, heat shock protein 90 (HSP90) was characterized as a direct target gene of canonical hedgehog signalling in HSCs. HSP90 inhibitor 17-AAG reduced HSP90 binding to HIF-1α, down-regulated HIF-1α protein abundance and decreased HIF-1α binding to DNA. 17-AAG also abolished 1-stearoyl-2-arachidonoyl-sn-glycerol (SAG) (a SMO agonist)-enhanced HSC angiogenic properties. Finally, the natural compound ligustrazine was found to inhibit canonical hedgehog signalling leading to suppressed angiogenic properties of HSCs in vitro and ameliorated liver fibrosis and sinusoidal angiogenesis in mice. CONCLUSION AND IMPLICATIONS We have provided evidence that the canonical hedgehog pathway controlled HSC-mediated liver angiogenesis. Selective inhibition of HSC hedgehog signalling could be a promising therapeutic approach for hepatic fibrosis.
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Affiliation(s)
- Feng Zhang
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Therapeutic Material of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Meng Hao
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Therapeutic Material of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Huanhuan Jin
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Therapeutic Material of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Zhen Yao
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Therapeutic Material of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Naqi Lian
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Therapeutic Material of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Li Wu
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Therapeutic Material of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jiangjuan Shao
- Department of Pharmacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Anping Chen
- Department of Pathology, School of Medicine, Saint Louis University, Saint Louis, MO, USA
| | - Shizhong Zheng
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Therapeutic Material of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, China
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29
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[Protective effects of heat shock protein 70 against hypoxic pulmonary hypertension in neonatal rats]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2017; 19. [PMID: 28100330 PMCID: PMC7390131 DOI: 10.7499/j.issn.1008-8830.2017.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
OBJECTIVE To investigate the protective effect of heat shock protein 70 (HSP70) against hypoxic pulmonary hypertension (HPH) in neonatal rats. METHODS A total of 128 neonatal rats were randomly divided into blank control group, HPH model group, empty virus group, and HSP70 group, with 32 rats in each group. Before the establishment of an HPH model, the rats in the blank control group and HPH model group were given caudal vein injection of 5 μL sterile saline, those in the empty virus group were given caudal vein injection of 5 μL Ad-GFP (1 010 PFU/mL), and those in the HSP70 group were given caudal vein injection of 5 μL Ad-HSP70 (1 010 PFU/mL). HPH model was prepared in the HPH model, empty virus, and HSP70 groups after transfection. At 3, 7, 10, and 14 days after model establishment, a multi-channel physiological recorder was used to record mean pulmonary arterial pressure (mPAP), optical and electron microscopes were used to observe the structure and remodeling parameters of pulmonary vessels, and Western blot was used to measure the protein expression of HSP70, hypoxia-inducible factor-1α (HIF-1α), endothelin-1 (ET-1), and inducible nitric oxide synthase (iNOS) in lung tissues. RESULTS At 3, 7, 10, and 14 days after model establishment, the HPH model group and the empty virus group had a significantly higher mPAP than the blank control group (P<0.05). On days 7 and 10 of hypoxia, the blank control group and the HSP70 group had significantly lower MA% and MT% than the HPH model group and the empty virus group (P<0.01); on day 14 of hypoxia, the HPH model group, empty virus group, and HSP70 group had similar MA% and MT% (P>0.05), but had significantly higher MA% and MT% than the blank control group (P<0.01). On days 3, 7 and 10 of hypoxia, the HSP70 group had significantly higher protein expression of HSP70 than the HPH model group, empty virus group, and blank control group (P<0.01); the HSP70 group had significantly lower expression of HIF-1α, ET-1, and iNOS than the HPH model group and the empty virus group (P<0.05) and similar expression of HIF-1α, ET-1, and iNOS as the blank control group (P>0.05). CONCLUSIONS In neonatal rats with HPH, HSP70 transfection can increase the expression of HSP70 in lung tissues, downregulate the expression of HIF-1α, ET-1, and iNOS, alleviate pulmonary vascular remodeling, and reduce pulmonary artery pressure; therefore, it may become a new strategy for the treatment of HPH in neonates.
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30
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Wang L, Wu HY, Li MX. [Protective effects of heat shock protein 70 against hypoxic pulmonary hypertension in neonatal rats]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2017; 19:88-94. [PMID: 28100330 PMCID: PMC7390131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 11/04/2016] [Indexed: 08/01/2024]
Abstract
OBJECTIVE To investigate the protective effect of heat shock protein 70 (HSP70) against hypoxic pulmonary hypertension (HPH) in neonatal rats. METHODS A total of 128 neonatal rats were randomly divided into blank control group, HPH model group, empty virus group, and HSP70 group, with 32 rats in each group. Before the establishment of an HPH model, the rats in the blank control group and HPH model group were given caudal vein injection of 5 μL sterile saline, those in the empty virus group were given caudal vein injection of 5 μL Ad-GFP (1 010 PFU/mL), and those in the HSP70 group were given caudal vein injection of 5 μL Ad-HSP70 (1 010 PFU/mL). HPH model was prepared in the HPH model, empty virus, and HSP70 groups after transfection. At 3, 7, 10, and 14 days after model establishment, a multi-channel physiological recorder was used to record mean pulmonary arterial pressure (mPAP), optical and electron microscopes were used to observe the structure and remodeling parameters of pulmonary vessels, and Western blot was used to measure the protein expression of HSP70, hypoxia-inducible factor-1α (HIF-1α), endothelin-1 (ET-1), and inducible nitric oxide synthase (iNOS) in lung tissues. RESULTS At 3, 7, 10, and 14 days after model establishment, the HPH model group and the empty virus group had a significantly higher mPAP than the blank control group (P<0.05). On days 7 and 10 of hypoxia, the blank control group and the HSP70 group had significantly lower MA% and MT% than the HPH model group and the empty virus group (P<0.01); on day 14 of hypoxia, the HPH model group, empty virus group, and HSP70 group had similar MA% and MT% (P>0.05), but had significantly higher MA% and MT% than the blank control group (P<0.01). On days 3, 7 and 10 of hypoxia, the HSP70 group had significantly higher protein expression of HSP70 than the HPH model group, empty virus group, and blank control group (P<0.01); the HSP70 group had significantly lower expression of HIF-1α, ET-1, and iNOS than the HPH model group and the empty virus group (P<0.05) and similar expression of HIF-1α, ET-1, and iNOS as the blank control group (P>0.05). CONCLUSIONS In neonatal rats with HPH, HSP70 transfection can increase the expression of HSP70 in lung tissues, downregulate the expression of HIF-1α, ET-1, and iNOS, alleviate pulmonary vascular remodeling, and reduce pulmonary artery pressure; therefore, it may become a new strategy for the treatment of HPH in neonates.
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Affiliation(s)
- Le Wang
- Department of Neonatology, First Affiliated Hospital of Xinjiang Medical University, Ürümqi 830054, China.
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Rehman H, Liu Q, Krishnasamy Y, Shi Z, Ramshesh VK, Haque K, Schnellmann RG, Murphy MP, Lemasters JJ, Rockey DC, Zhong Z. The mitochondria-targeted antioxidant MitoQ attenuates liver fibrosis in mice. INTERNATIONAL JOURNAL OF PHYSIOLOGY, PATHOPHYSIOLOGY AND PHARMACOLOGY 2016; 8:14-27. [PMID: 27186319 PMCID: PMC4859875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 03/15/2016] [Indexed: 06/05/2023]
Abstract
Oxidative stress plays an essential role in liver fibrosis. This study investigated whether MitoQ, an orally active mitochondrial antioxidant, decreases liver fibrosis. Mice were injected with corn oil or carbon tetrachloride (CCl4, 1:3 dilution in corn oil; 1 µl/g, ip) once every 3 days for up to 6 weeks. 4-Hydroxynonenal adducts increased markedly after CCl4 treatment, indicating oxidative stress. MitoQ attenuated oxidative stress after CCl4. Collagen 1α1 mRNA and hydroxyproline increased markedly after CCl4 treatment, indicating increased collagen formation and deposition. CCl4 caused overt pericentral fibrosis as revealed by both the sirius red staining and second harmonic generation microscopy. MitoQ blunted fibrosis after CCl4. Profibrotic transforming growth factor-β1 (TGF-β1) mRNA and expression of smooth muscle α-actin, an indicator of hepatic stellate cell (HSC) activation, increased markedly after CCl4 treatment. Smad 2/3, the major mediator of TGF-β fibrogenic effects, was also activated after CCl4 treatment. MitoQ blunted HSC activation, TGF-β expression, and Smad2/3 activation after CCl4 treatment. MitoQ also decreased necrosis, apoptosis and inflammation after CCl4 treatment. In cultured HSCs, MitoQ decreased oxidative stress, inhibited HSC activation, TGF-β1 expression, Smad2/3 activation, and extracellular signal-regulated protein kinase activation. Taken together, these data indicate that mitochondrial reactive oxygen species play an important role in liver fibrosis and that mitochondria-targeted antioxidants are promising potential therapies for prevention and treatment of liver fibrosis.
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Affiliation(s)
- Hasibur Rehman
- Department of Drug Discovery & Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
- Department of Biology, Faculty of Sciences, University of TabukSaudi Arabia
| | - Qinlong Liu
- Department of Drug Discovery & Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
- The Second Affiliated Hospital of Dalian Medical UniversityDalian, Liaoning Province, China
| | - Yasodha Krishnasamy
- Department of Drug Discovery & Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
| | - Zengdun Shi
- Department of Medicine, Medical University of South CarolinaCharleston, SC 29425, USA
| | - Venkat K Ramshesh
- Department of Drug Discovery & Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
| | - Khujista Haque
- Department of Drug Discovery & Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
| | - Rick G Schnellmann
- Department of Drug Discovery & Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
- Ralph H. Johnson VA Medical CenterCharleston, SC 29403, USA
| | - Michael P Murphy
- MRC Mitochondrial Biology Unit, Wellcome Trust/MRC BuildingCambridge CB2 0XY, U.K.
| | - John J Lemasters
- Department of Drug Discovery & Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
- Department of Biochemistry & Molecular Biology, Medical University of South CarolinaCharleston, SC 29425, USA
- Institute of Theoretical & Experimental Biophysics, Russian Academy of SciencesPushchino, Russian Federation
| | - Don C Rockey
- Department of Medicine, Medical University of South CarolinaCharleston, SC 29425, USA
| | - Zhi Zhong
- Department of Drug Discovery & Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
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Al-Rasheed NM, Fadda LM, Ali HM, Abdel Baky NA, El-Orabi NF, Al-Rasheed NM, Yacoub HI. New mechanism in the modulation of carbon tetrachloride hepatotoxicity in rats using different natural antioxidants. Toxicol Mech Methods 2016; 26:243-50. [DOI: 10.3109/15376516.2016.1159769] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Sarr O, Blake A, Thompson JA, Zhao L, Rabicki K, Walsh JC, Welch I, Regnault TRH. The differential effects of low birth weight and Western diet consumption upon early life hepatic fibrosis development in guinea pig. J Physiol 2016; 594:1753-72. [PMID: 26662996 DOI: 10.1113/jp271777] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 12/06/2015] [Indexed: 02/06/2023] Open
Abstract
Postnatal intake of an energy dense diet, the Western diet (WD), is a strong risk factor for liver fibrosis. Recently, adverse in utero conditions resulting in low birth weight (LBW) have also been associated with postnatal fibrosis development. We assessed the independent and possible synergistic effects of placental insufficiency-induced LBW and postnatal WD consumption on liver fibrosis in early adulthood, with a specific focus on changes in inflammation and apoptosis pathways in association with fibrogenesis. Male LBW (uterine artery ablation) and normal birth weight (NBW) guinea pig pups were fed either a control diet (CD) or WD from weaning to 150 days. Significant steatosis, mild lobular inflammation, apoptosis and mild stage 1 fibrosis (perisinusoidal or portal) were evident in WD-fed offspring (NBW/WD and LBW/WD). In LBW/CD versus NBW/CD offspring, increased transforming growth factor-beta 1 and matrix metallopeptidase mRNA and sma- and Mad-related protein 4 (SMAD4) were present in conjunction with minimal stage 1 portal fibrosis. Further, connective tissue growth factor mRNA was increased and miR-146a expression decreased in LBW offspring, irrespective of diet. Independent of birth weight, WD-fed offspring exhibited increased expression of fibrotic genes as well as elevated inflammatory and apoptotic markers. Moreover, the augmented expression of collagen, type III, alpha 1 and tumor necrosis factor-alpha was associated with increased recruitment of RNA polymerase II and enhanced histone acetylation (K9) to their respective promoters. These data support a role for both LBW and postnatal WD as factors contributing to hepatic fibrosis development in offspring through distinct pathways.
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Affiliation(s)
- Ousseynou Sarr
- Department of Obstetrics and Gynecology, Western University, 1151 Richmond Street, London, ON, Canada, N6A 5C1.,Lawson Research Institute, 268 Grosvenor St, London, ON, Canada, N6A 4V2.,Children's Health Research Institute, 800 Commissioners Road East, London, ON, Canada, N6C 2V5
| | - Alexandra Blake
- Department of Physiology and Pharmacology, Western University, 1151 Richmond Street, London, ON, Canada, N6A 5C1
| | - Jennifer A Thompson
- Department of Physiology and Pharmacology, Western University, 1151 Richmond Street, London, ON, Canada, N6A 5C1
| | - Lin Zhao
- Department of Obstetrics and Gynecology, Western University, 1151 Richmond Street, London, ON, Canada, N6A 5C1
| | - Katherine Rabicki
- Department of Physiology and Pharmacology, Western University, 1151 Richmond Street, London, ON, Canada, N6A 5C1
| | - Joanna C Walsh
- Pathology and Laboratory Medicine, Western University, 1151 Richmond Street, London, ON, Canada, N6A 5C1
| | - Ian Welch
- Animal Care and Veterinary Services, Western University, 1151 Richmond Street, London, ON, Canada, N6A 5C1
| | - Timothy R H Regnault
- Department of Obstetrics and Gynecology, Western University, 1151 Richmond Street, London, ON, Canada, N6A 5C1.,Department of Physiology and Pharmacology, Western University, 1151 Richmond Street, London, ON, Canada, N6A 5C1.,Lawson Research Institute, 268 Grosvenor St, London, ON, Canada, N6A 4V2.,Children's Health Research Institute, 800 Commissioners Road East, London, ON, Canada, N6C 2V5
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Fujimoto Y, Urashima T, Shimura D, Ito R, Kawachi S, Kajimura I, Akaike T, Kusakari Y, Fujiwara M, Ogawa K, Goda N, Ida H, Minamisawa S. Low Cardiac Output Leads Hepatic Fibrosis in Right Heart Failure Model Rats. PLoS One 2016; 11:e0148666. [PMID: 26863419 PMCID: PMC4749189 DOI: 10.1371/journal.pone.0148666] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 01/21/2016] [Indexed: 12/11/2022] Open
Abstract
Background Hepatic fibrosis progresses with right heart failure, and becomes cardiac cirrhosis in a severe case. Although its causal factor still remains unclear. Here we evaluated the progression of hepatic fibrosis using a pulmonary artery banding (PAB)-induced right heart failure model and investigated whether cardiac output (CO) is responsible for the progression of hepatic fibrosis. Methods and Results Five-week-old Sprague-Dawley rats divided into the PAB and sham-operated control groups. After 4 weeks from operation, we measured CO by echocardiography, and hepatic fibrosis ratio by pathological examination using a color analyzer. In the PAB group, CO was significantly lower by 48% than that in the control group (78.2±27.6 and 150.1±31.2 ml/min, P<0.01). Hepatic fibrosis ratio and serum hyaluronic acid, an index of hepatic fibrosis, were significantly increased in the PAB group than those in the control group (7.8±1.7 and 1.0±0.2%, P<0.01, 76.2±27.5 and 32.7±7.5 ng/ml, P<0.01). Notably, the degree of hepatic fibrosis significantly correlated a decrease in CO. Immunohistological analysis revealed that hepatic stellate cells were markedly activated in hypoxic areas, and HIF-1α positive hepatic cells were increased in the PAB group. Furthermore, by real-time PCR analyses, transcripts of profibrotic and fibrotic factors (TGF-β1, CTGF, procollargen I, procollargen III, MMP 2, MMP 9, TIMP 1, TIMP 2) were significantly increased in the PAB group. In addition, western blot analyses revealed that the protein level of HIF-1α was significantly increased in the PAB group than that in the control group (2.31±0.84 and 1.0±0.18 arbitrary units, P<0.05). Conclusions Our study demonstrated that low CO and tissue hypoxia were responsible for hepatic fibrosis in right failure heart model rats.
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Affiliation(s)
- Yoshitaka Fujimoto
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
- Department of Pediatrics, The Jikei University School of Medicine, Tokyo, Japan
| | - Takashi Urashima
- Department of Pediatrics, The Jikei University School of Medicine, Tokyo, Japan
- * E-mail:
| | - Daisuke Shimura
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
| | - Reiji Ito
- Department of Pediatrics, The Jikei University School of Medicine, Tokyo, Japan
| | - Sadataka Kawachi
- Division of Cardiology, Saitama Children’s Medical Center, Saitama, Japan
| | - Ichige Kajimura
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
| | - Toru Akaike
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
| | - Yoichiro Kusakari
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
| | - Masako Fujiwara
- Department of Pediatrics, The Jikei University School of Medicine, Tokyo, Japan
| | - Kiyoshi Ogawa
- Division of Cardiology, Saitama Children’s Medical Center, Saitama, Japan
| | - Nobuhito Goda
- Department of Life Science and Medical Bioscience, Waseda University, Tokyo, Japan
| | - Hiroyuki Ida
- Department of Pediatrics, The Jikei University School of Medicine, Tokyo, Japan
| | - Susumu Minamisawa
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
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Hypoxia impairs anti-viral activity of natural killer (NK) cells but has little effect on anti-fibrotic NK cell functions in hepatitis C virus infection. J Hepatol 2015; 63:1334-44. [PMID: 26297916 DOI: 10.1016/j.jhep.2015.08.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 06/30/2015] [Accepted: 08/01/2015] [Indexed: 01/04/2023]
Abstract
BACKGROUND & AIMS Natural killer (NK) cells have been shown to exert anti-viral as well as anti-fibrotic functions in hepatitis C virus (HCV) infection. Previous studies, however, analyzed NK cell functions exclusively under atmospheric oxygen conditions despite the fact that the liver microenvironment is hypoxic. Here, we analyzed the effects of low oxygen tension on anti-viral and anti-fibrotic NK cell activity. METHODS Peripheral (n=34) and intrahepatic (n=15) NK cells from HCV(+) patients as well as circulating NK cells from healthy donors (n=20) were studied with respect to anti-viral and anti-fibrotic activity via co-culture experiments with HuH7 replicon cells and hepatic stellate cells, respectively. RESULTS Anti-viral activity of resting NK cells from healthy controls was not affected by hypoxia. However, hypoxia significantly reduced the response of healthy NK cells to cytokine stimulation. In contrast to healthy controls, we observed resting and cytokine activated peripheral NK cells from HCV patients to display a significantly decreased anti-viral activity when cultured at 5% or 1% oxygen, suggesting HCV NK cells to be very sensitive to hypoxia. These findings could be confirmed when intrahepatic NK cells were tested. Finally, we show that anti-fibrotic NK cell activity was not affected by low oxygen tension. CONCLUSIONS Our results show that anti-viral function of NK cells from HCV(+) patients is critically affected by a hypoxic microenvironment and, therefore, indicate that in order to obtain an accurate understanding of intrahepatic NK cell anti-HCV activity, the laboratory modelling should take into account the liver specific levels of oxygen.
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Lambrecht J, Mannaerts I, van Grunsven LA. The role of miRNAs in stress-responsive hepatic stellate cells during liver fibrosis. Front Physiol 2015; 6:209. [PMID: 26283969 PMCID: PMC4516870 DOI: 10.3389/fphys.2015.00209] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 07/13/2015] [Indexed: 12/12/2022] Open
Abstract
The progression of liver fibrosis and cirrhosis is associated with the persistence of an injury causing agent, leading to changes in the extracellular environment and a disruption of the cellular homeostasis of liver resident cells. Recruitment of inflammatory cells, apoptosis of hepatocytes, and changes in liver microvasculature are some examples of changing cellular environment that lead to the induction of stress responses in nearby cells. During liver fibrosis, the major stresses include hypoxia, oxidative stress, and endoplasmic reticulum stress. When hepatic stellate cells (HSCs) are subjected to such stress, they modulate fibrosis progression by induction of their activation toward a myofibroblastic phenotype, or by undergoing apoptosis, and thus helping fibrosis resolution. It is widely accepted that microRNAs are import regulators of gene expression, both during normal cellular homeostasis, as well as in pathologic conditions. MicroRNAs are short RNA sequences that regulate the gene expression by mRNA destabilization and inhibition of mRNA translation. Specific microRNAs have been identified to play a role in the activation process of HSCs on the one hand and in stress-responsive pathways on the other hand in other cell types (Table 2). However, so far there are no reports for the involvement of miRNAs in the different stress responses linked to HSC activation. Here, we review briefly the major stress response pathways and propose several miRNAs to be regulated by these stress responsive pathways in activating HSCs, and discuss their potential specific pro-or anti-fibrotic characteristics.
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Affiliation(s)
- Joeri Lambrecht
- Liver Cell Biology Lab, Department of Biomedical Sciences, Vrije Universiteit Brussel Brussels, Belgium
| | - Inge Mannaerts
- Liver Cell Biology Lab, Department of Biomedical Sciences, Vrije Universiteit Brussel Brussels, Belgium
| | - Leo A van Grunsven
- Liver Cell Biology Lab, Department of Biomedical Sciences, Vrije Universiteit Brussel Brussels, Belgium
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Zhu L, Dao J, Du X, Li H, Lu K, Liu J, Cheng G. Altered levels of circulating miRNAs are associated Schistosoma japonicum infection in mice. Parasit Vectors 2015; 8:196. [PMID: 25885182 PMCID: PMC4391475 DOI: 10.1186/s13071-015-0806-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 03/16/2015] [Indexed: 12/14/2022] Open
Abstract
Background Dioecious flatworms of the genus Schistosoma causes schistosomiasis, which is a major public health problem in developing countries. Acquiring detailed knowledge of schistosome-host interactions may aid in the development of novel strategies for schistosomiasis control. MicroRNAs (miRNAs) are involved in processes such as development, cell proliferation, metabolism, and signal transduction. Circulating miRNAs not only serve as a novel class of biomarkers of many diseases but also regulate target gene expression in recipient cells, which are similar to hormones. Methods In the present study, we used miRNA microarrays to determine the profile of circulating miRNAs associated with S. japonicum infection of mice. The biological functions of the altered levels of miRNAs and their target genes were predicted using bioinformatics. Expression levels of selected miRNAs and their target genes were further analyzed by quantitative RT-PCR. Results Our study identified 294 and 189 miRNAs in infected mice that were expressed in two independent experiments at levels ≥ 2-fold higher or ≤ 0.5-fold lower, respectively, compared with uninfected mice. Thirty-six of the same miRNAs were detected in these analyses. Moreover, pathway analyses indicated that most of these miRNAs are putatively involved in signaling pathways associated with pathogenesis, such as Wnt and MAPK signaling. Further, we show an inverse correlation between the circulating levels of these miRNAs and their target genes, suggesting that changes in miRNA expression may cause aberrant expression of genes such as Creb1 and Caspase-3 in mice infected with S. japonicum. Conclusions Our study shows significant differences in the levels of circulating miRNAs between S. japonicum infected mice and uninfected mice. In particular, the altered levels of miR-706 and miR-134-5p were associated with altered levels of expression of the Caspase-3 and Creb1 genes, respectively, suggesting that circulating miRNAs may serve as important mediators of the pathology of hepatic schistosomiasis. Additionally, our results are expected to provide new insights for further understanding the mechanisms of schistosome-host interaction that may facilitate in the development of novel interventions for alleviating the symptom of S. japonicum infection as well as for preventing and treating schistosomiasis. Electronic supplementary material The online version of this article (doi:10.1186/s13071-015-0806-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lihui Zhu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences; Key Laboratory of Animal Parasitology, Ministry of Agriculture, 518 Ziyue Road, Shanghai, China.
| | - Jinwei Dao
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences; Key Laboratory of Animal Parasitology, Ministry of Agriculture, 518 Ziyue Road, Shanghai, China.
| | - Xiaoli Du
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences; Key Laboratory of Animal Parasitology, Ministry of Agriculture, 518 Ziyue Road, Shanghai, China.
| | - Hao Li
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences; Key Laboratory of Animal Parasitology, Ministry of Agriculture, 518 Ziyue Road, Shanghai, China.
| | - Ke Lu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences; Key Laboratory of Animal Parasitology, Ministry of Agriculture, 518 Ziyue Road, Shanghai, China.
| | - Jinming Liu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences; Key Laboratory of Animal Parasitology, Ministry of Agriculture, 518 Ziyue Road, Shanghai, China.
| | - Guofeng Cheng
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences; Key Laboratory of Animal Parasitology, Ministry of Agriculture, 518 Ziyue Road, Shanghai, China.
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Zhao Y, Ma X, Wang J, Zhu Y, Li R, Wang J, He X, Shan L, Wang R, Wang L, Li Y, Xiao X. Paeoniflorin alleviates liver fibrosis by inhibiting HIF-1α through mTOR-dependent pathway. Fitoterapia 2014; 99:318-27. [DOI: 10.1016/j.fitote.2014.10.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 10/07/2014] [Accepted: 10/12/2014] [Indexed: 12/18/2022]
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Curcumin protects against CCl4-induced liver fibrosis in rats by inhibiting HIF-1α through an ERK-dependent pathway. Molecules 2014; 19:18767-80. [PMID: 25407718 PMCID: PMC6270950 DOI: 10.3390/molecules191118767] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 10/21/2014] [Accepted: 10/27/2014] [Indexed: 02/05/2023] Open
Abstract
The ERK/HIF-1α signaling pathway is believed to play an important role in the genesis of progressive fibrosis. An increasing expression of HIF-1α and ERK accompanies CCl4-induced liver fibrosis in rats. Curcumin is verified to have antifibrotic effects in several kinds of liver fibrosis models. There is no specific evidence illustrating a connection between curcumin and the HIF-1α/ERK pathway in rat liver fibrosis induced by CCl4. In this study, liver fibrosis was induced by CCl4 in treated rats. The data demonstrated that curcumin was able to attenuate liver fibrosis and inhibit the proliferation of HSC. Moreover, curcumin could remarkably elevate the hepatic function by decreasing serum levels of ALT, AST and ALP, and increasing levels of ALB, TP and α-SMA, Col III mRNA expression. Meanwhile, ECM status could also be reflected by curcumin treatment. The alleviation with curcumin treatment was associated with inhibition of HIF-1α and phosphor-ERK. This study indicates that curcumin alleviates fibrosis by reducing the expression of HIF-1α partly through the ERK pathway.
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Zhan L, Huang C, Meng XM, Song Y, Wu XQ, Yang Y, Li J. Hypoxia-inducible factor-1alpha in hepatic fibrosis: A promising therapeutic target. Biochimie 2014; 108:1-7. [PMID: 25447141 DOI: 10.1016/j.biochi.2014.10.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 10/17/2014] [Indexed: 02/08/2023]
Abstract
Hypoxia-inducible factor-1alpha (HIF-1α) is a regulated subunit of the hypoxia-inducible factor 1 (HIF1), which functions as a key transcription factor in response to hypoxic stress by regulating genes involved in maintaining oxygen homeostasis. In recent years, a growing body of studies showed that HIF-1α was significantly increased in hepatic fibrotic tissues and activated hepatic stellate cells (HSCs). Furthermore, knockdown of HIF-1α expression inhibited the proliferation and activation of HSCs. In addition, HIF-1α-dependent genes and the extensive network of signaling cascades focus on HIF-1α have been reported to associate with the development of hepatic fibrosis, suggesting that HIF-1α might play a crucial role in hepatic fibrosis. However, the mechanisms by which HIF-1α regulates hepatic fibrosis are still undefined. In this review, we concentrate on multiple signaling pathways and genes related with HIF-1α which may be involved in the development of hepatic fibrosis, further discussing its potential as a novel therapeutic target for hepatic fibrosis.
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Affiliation(s)
- Lei Zhan
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China
| | - Cheng Huang
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China
| | - Xiao-Ming Meng
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China
| | - Yang Song
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China
| | - Xiao Qin Wu
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China
| | - Yang Yang
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China
| | - Jun Li
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China.
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Deng J, Huang Q, Wang Y, Shen P, Guan F, Li J, Huang H, Shi C. Hypoxia-inducible factor-1alpha regulates autophagy to activate hepatic stellate cells. Biochem Biophys Res Commun 2014; 454:328-34. [PMID: 25450397 DOI: 10.1016/j.bbrc.2014.10.076] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 10/15/2014] [Indexed: 02/07/2023]
Abstract
The role of autophagy in Hif-1α modulated activation of hepatic stellate cells was illustrated in current work. Autophagy markers were determined in livers of Schistosoma japonicum infected mice and hypoxia or LPS treated human hepatic stellate cell, LX-2 cells. The action of Hif-1 to autophagy was defined as increase of autophagy markers was significantly suppressed in Hif-1α siRNA transfected cells upon hypoxia or LPS stimulation. The function of autophagy in activation of LX-2 cells was assessed as increase of activation markers was blocked using autophagy inhibitors under hypoxia and LPS stimulation. Conclusively, Hif-1α regulates activation of hepatic stellate cell by modulating autophagy.
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Affiliation(s)
- Jing Deng
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Qin Huang
- Department of Medical Rehabilitation, Union Hospital, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Yueqin Wang
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Pei Shen
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Fei Guan
- Department of Parasitology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Jianrong Li
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Hanju Huang
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Chunwei Shi
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China.
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